Finding the Fourth Proportional to 7,698,989.34, 11,543,235.12 and 3,905,156.70
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Solution
The fourth proportional to 7,698,989.34, 11,543,235.12 and 3,905,156.70 is: 5,855,072.66
Step by Step Solution
- Step 1: Write the proportion equation
7,698,989.34 : 11,543,235.12 = 3,905,156.70 : x - Step 2: Convert to fraction form
7,698,989.34/11,543,235.12 = 3,905,156.70/x - Step 3: Cross multiply
7,698,989.34x = 11,543,235.12 × 3,905,156.70 - Step 4: Simplify right side
7,698,989.34x = 45,078,141,968,543.30 - Step 5: Solve for x
x = 45,078,141,968,543.30/7,698,989.34 - Step 6: Final answer
x = 5,855,072.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.